Brake for talking-machines.



c. o. SCOTT. BRAKE FOR TALKING MACHINES.

APPLICATION FILED NOV. 3, l9l5.

Patented 001;. 31, A1916.

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' UNITED STATES PATENT OFFICE.;

CHARLES O. SCOTT, 0F GANANOQUE, ONTARIO, CANADA', ASSIGNOR 0F ONE-HALF T0 JOHN W. SCOTT, 0F NORTH BAY, ONTARIO, CANADA.

BRAKE FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Oct. 31, 1316.

Application led November 3, 191,5. Serial No. 59,477.

To all zlltom it 1n ag/ concern.

Leeds, in the Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Brakes for Talking-Machines, and do hereby declare that the following is a full, clear, and exact v description of same.

This invention relates to talking machine brakes of the type adapted to control the starting and stopping of the rotation of the record carrying member of such talking machines the stopping of such rotation being automatically effected as the needle or reproducing point f the machine assumes a predetermined position upon the record, the object of the invention being to provlde means whereby the release of the brake to allow the rotation of the record carrying member may be effected simultaneously with the adjustment of the means determining the position of the reprodu-:er point at the moment when the cessation of such rotation of the said record carrying member is deslrable.

A resultant object is to provide a brake operating member which is associated with means to automatically effect the release of said brake as hereinafter explained.

A further object is to provide registering means to indicate at what point in the operation of the machine the brake will be released to'stop rotation of the record carrying member; and a still further object is to provide simplicity of operation in the device whereby movement in a forward and reverse direction of the brake operating member will be attended with the release of the record carrying member and the adjustment of the brake releasing mechanism.

In carrying the invention into effect I prefer to provide a'base plate of quadrant form having near its apex a pivot upon which a three membered device is mounted, the intermediate member extending outwardly beyond the periphery of the quadrant and having the form of a lever adapted to be manually operated, hereinafter called the operating lever, the other of said members being hereinafter calledthe trip arm and the brake armi. respectively. A further member, vhereinafter called the pawl arm, is

also mounted upon said pivot and is fric.

tionallyras'sociated with the first mentioned three member-ed device, y A brake, adapted to fr1ct10nally operate `upon the record carrylng member, 1s plvotally mounted upon said base plate and somewhat in proximity to the outer edge of the quadrant, the 'said brake being in the form of a flat plate carrying at its outer end the rubber or other means t) engage with rthe record carrying member and having two recesses in proximity to the pivot in one or other of which recesses the outer end of the pawl arm may engage, resilient means being provided to retain the said pawl arm and the brake in their active relation. The brake is also provided with a projection which extends. into the path of rthe brake arm whereby movement of the operatinglever, away'from the brake will result in the engagement` of the said brake arm with the saidprojection and the incidental movement of the brake, upon its pivot, to release the record carrying member, upon which movement of the said brake, the pawl arm will engage with lone of the recesses to retain said brake in its inoperative position. The movement of theoperating lever naturally entails the movement of the trip arm and will thereby effect an adjustment of the relation between the said trip arm and the sound arm of the talking ma-f,

chine which is desirable, and as the reverse movement of the said operating lever will not effect the operation of the brake, the adjustment of the trip armr may be made to, any desired extent. A suitable trip isprovided in connection with the sound arm-of the machine to contact with the trip arm, as the reproducerpoint moves over the record and will result in the release of 'the brake, all of which'is more particularly described and ascertained in and bythe following specification and with reference to the accompanying drawing in Which Figure l is a plan View of a disk talking machine partly broken away. indicating the application of this invention thereto, and Fig. '2 is a detail perspective view ofthe brake mechanism detached from the machine.' l

Similar characters of reference indicatey similar-,parts in both figures of the drawing.

. A is the usual rotary record carrying member ,or table and B a disk record mounted thereon, while C is the sound arm of a talking machine to which is connected the reproducer, D carrying the needle E, the

` pivot locatedin` the b .periphery .ofv the or rigidly connected,- with the Theitable'- is?!l usi'ially'supp'orted vs'liglitlyt above the top offa motor .'c'sing'and-' upon if this casing and more or' lessy beneatlintlmie Vtable A, I prefer to nioiinbtlie"bralteime'chi nism constituting this invention.

' This. brake `ciIr'iIi-i"ise`e's preferably quad-' rant shaped base 1 upon which 'a brake proper 2 is pivotally mounted, the said bra-ke proper carrying-the rubber 3, the term rubbenbeing. intended to indicate the -function of theintegerand not the material of Athe said pivot 5 forming ,tlieturning point -for an operating lever .6, the outer end ot' which leverextends somewhatl beyondV the quadrant. Integral with said operating.r

)lever 6 is a ztriparm 7 and -a Abrakearm 8 2i. lever is` intermediate of said arms.

preferably ldisposed so that the operating The other yendof thev brake arm is adapted I when km'oved'in-an anti-clockwise direction i (where the, parts are arranged as indicated- 80 in the drawings) torcontact with a projec Y recesses the extremitv wellunderstood y tion 9 uponI the brake 2 forthe purpose hereinafterdescribed. -f r v.

10 isap'awl armaalsoimounted upon pivot 5 and frictionallyassociated with the -trip arm @whereby movement of the said trip arm will .be transmittedto the pawl arm to an extent limited by the stopr 11 upon the bascf1. y

Itwillbe seenl thatr the brake islprovided withvrecesses 12a-and 13 with either of which of the'fsaid ypawl arin 10 may engage according to the position ot the brake. J l

14 is a.y springextending tions, `andi 16 upon ythe pawl arm and brake respectively;v the said spring being-in a stateofftension. Y v

17 is :a pin` which'dependsfroni the sound arm C to contactwith the trip arm 7 as hereinafter. described, this .pin beingr 'merely indicated'in dotted-linesin Fig.. 1 as being The outer end of the operating` vlever is vpi'ovided vwith; a `pointer 18 adapted toi-cgrlister with f fradiiations 19 uponithe quadrant according to thefposition ot the lever.

v 'Ihe operation-ofthe device will now be described g--fPresumiiig that thecpai-ts are inthe position indicated in Fig. 2, in which it will be seen that the rubber 3ds in a forward position, in' which position4 `iundei' the influence of thelspring 14 it,- woiild frictionally' abut withthe inside edge of the rim, usually .foundnipon the underside of circular record tables,l (this lrim Vbeing indin fantasme-1"' wfan" festen-tf whicliin means orwhich may be indicated by a star "upontheoiiadrant as is indicated in the fd ra w in g.

lever is' attended by movement to a lsimilar various radii of-sound wavebetween projec- Vpoint in reproduction contact between the place.

p flfig. 1' of"the\f.d ujiiigiby ie chain lii' F)"`sucli`x'fi"ictioiial'abutment preventing the rotation of the said" talileLthe operating rver.f-assessed trasmite traitee to y be limited by suitable t This movement of l the operating extentot the tripfarm 7 and the'brake arm 8 whereby the said brakearm will contact with the proyectioii 9,'jiiponthebralie 2,

-and 'effect the movementof theasa'id vbrake to the position as'indicated'l in F ig.11 when the extremity of the pawl arin 1Q ywill enf gage with the recess 12 .in thesaidbrake by virtue of the action ofthefsprin'g 14. f y

- The movement yof the brake Vto `aninop- *erative' position permitsrthe record table to rotate. and as the sound ai'in C carrying the p'in 17 swings, dine to needle E pin :lwill eventually contact with ltheltrip point determined 'by the position arm 4 at a oi' the trip arm, which position ofthe trip arm is also determined by the. movement of the operating lever in an; opposite direction to that necessary to brin'geth'e biake'into its inoperative position ory until y the Lpointer 1S upon theloperating lever 'G're'gisters with one or other of the graduations upon fthe,

quadrant,v the graduation's beingir such". that the point marked O willindicate that,

lwhen the pointer f registers' therewith. l the trip arm is m such aposition that the -pm '1t will Contact therewith upontlieneedle E approachingY a determined radius from the center ofthe record. y f y' v The radius conformingv withthe graduation O represents the nearest linefof sound the movement ot' the* over the face ofga record, vthe said waves to the center of the` record usually found. thefurther graduations--*indicating- 'lines' at which saidpin 17 and the trip arin '7 will take pointer registers at arm 8- will lbe moved away'fromV the projection 9, upon the bi'ake 2, and the tiip'aim Thus upon the movement of tlie'opy erating lever,` until the 4one orother of the graduations, th`e brake brought to its adjusted posit/i015 I` and when the' needle E has traveled across the'record until it assumes the' radial position indicated Vh v the pointer 18, the pin`v17 vwill contact with the trip' arm move the said armrection when the `pawl arm-f` willA be' sprung fromV its enga gement with Vthe/'recess 12'," diie 7 and thereby slightly ...to-.the frictional relation of tlipawl `arm and said (trip arm', v the 'brake thus. returning tation ofthe i'ecord'table.-l "Hence 4the'fceSS.-

in an anti-clockwise di-"f .125 to its operative position funde/r theinfliience 'l yof the spring 14 and 'prevei'rtingV further rorecord or a part of the record is completed, as may be desired. It is suggested that the records should be numbered in order to indicate the radius ot' the final sound wave lines, or ot sound wave lilies representing the completion of a part ot` the record, such as one verse of a song, these numbers conforming with the particular graduations upon the quadrant to which they relate.

IVith a device ot' this description an Iextremely simple structure is provided having but one spring operating both the pawl arm and the brake, and an extremely simple operation of the operating lever is necessary in order to release the record carrying table and to regulate the trip arm, and it will also be understood that the stopping of the rotary movement ofr the record table may be ,readily effected irrespective of the automatic stopping, if desirable, merely by a Vslight movement otl the operating lever in the direction ofthe star indicated upon the -quadrant, whereby the paivl arm will be frictionally moved ont of its engagement with the recess 12.

This invention may be developed within the scope of the following claims without departing from the essential features thereof and it is desired that the specifi ation and drawing be read as being merely illustrative and not in a limiting sense, except as necessitated by the prior art.

That I claim as my invention is: 1. In a talking machine brake, a brake proper, meansl to temporarily retain said brake proper in an inoperative position, a brake arm, a trip arm, an operating level' adapted to positively actuate said brake arm and said trip arm, and a pawl arm frictionally associated with said trip arm said pawl arm `determining the position ot the said brake proper. 'Y

2. A talking machine brake comprising a brake proper, means to temporarily retain said brake proper in an inoperative position, a brake arm, a trip arin, an operating lever adapted tov positively actuate said brake arm and said trip arm, a paivl arm frictionally associated with said Atrip arm to determine the position ot said brake proper and a t-ensioned resilient member tending to retain said pa\vl -arm and said brake proper in active relation.

3. In a talking machine brake, a brake setting mechanism adapted to retain said brake temporarily in an inoperative position, a brake releasing mechanism adapted to operate automatically at a predetermined time to release said brake, a single lever, the operation ot' which will effect both the inoperative setting ot' said brake and the determining ot' the subsequent operation of said brake releasing mechanism, and a graduated member with which said lever registers to indicate the moment of release of said brake proper.

l. In a talking machine brake, a brake proper, means to temporarily retain said brake proper in an inoperative position, a brake arm, an operating lever adapted to positively actuate said brake arm and said trip arm.` a pawl arm frictionally associated with said trip arm, said paivl arm determining the `position of the said brake proper, and a graduated member with which said lever registers to indicate the moment 0f release of said bra-ke proper.

A talking machine brake comprising a bake proper, means to temporarily retain said brake proper in an inoperative position, a brake arm, a trip arm, an operating Vproper, a tensioned resilientv member tending to retain said pawl arm and said brake proper in active relation, and a graduated member to indicate by the position of said lever the moment of release of'said brake propel'.

(3. A talking machine brake comprising a. brake proper, means to temporarily retain saidlnake"propei in an inoperative position, a brake arm, a trip arm, an operating lever integral wit-h said brake arm and said trip arm, and a pa\vl arm frictionally associated with said trip arm, said pawl arm determining the position of the said brake proper.

Signed'at the town ot' (anonoqne, in the county ot' Leeds, in the Province of Ontario, in` the Dominion of Canada, this 21st day ot' October, 1915.

CHARLES O. SCOTT.

Witnesses Bnk'rHA SULLIv.-\N., G. BEIFER. 

